Is the underlined phrase an adjective phrase or an adverb phrase?

The true king of the beasts is the elephant.

A.
adverb phrase

B.
adjective phrase

Of The Best is underlined

Question

Is the underlined phrase an adjective phrase or an adverb phrase? 

The true king of the beasts is the elephant.
 
 A.
adverb phrase
 
 B.
adjective phrase 


Of The Best is underlined

anonymous · Answer

i mean of the beasts

anonymous · Answer

@gavin39  @Yuba

anonymous · Answer

Sorry for the late reply. Bit busy. I believe it is an adjective, since there is nothing related to being a verb in that phrase.

anonymous · Answer

thank you

anonymous · Answer

Out of those two options, it's definitely an adjective phrase :)  However, and for the sake of grammatical accuracy, it's a prepositional phrase, but I guess that's of no use to you if your professor or the book do not get into the very specifics. Definitely AdjP :)

anonymous · Answer

I agree. It is a prepositional phrase, but now it's considered an adjective phrase.